to the Members Page
Club on Stargazers Lounge
The Swindon club is now on the Stargazers Lounge, and is accessed by going to Community> Social Groups> Astro Societies> Swindon Stargazers Club.
group already has a number of members and all you have to do to take part in the
forum and become a member of this group is to go through a simple process of registration.
You will be sent an email for security purposes and then you have to log back
in using the link in the email to confirm your identity. Your login name can be
your real name or nickname. |
So go on, why not join now!
Hubble Space Telescope Finds a Double Nucleus in the Andromeda Galaxy
July 20, 1993: A team of astronomers using NASA's Hubble Space Telescope has discovered a "double nucleus" in the center of the neighboring spiral galaxy M31, located in the constellation Andromeda.
[Right] - HST View of Galactic Nucleus
A NASA's Hubble Space Telescope (HST) image of a "double nucleus" in the giant spiral galaxy in Andromeda, M31. Each of the two light-peaks contains a few million densely packed stars. The brighter object is the "classic" nucleus as studied from the ground. However, HST reveals that the true center of the galaxy is really the dimmer component. One possible explanation is that the brighter cluster is the leftover remnant of a galaxy cannibalized by M31. Another idea is that the true center of the galaxy has been divided in two by deep dust absorption across the middle, creating the illusion of two peaks. This green-light image was taken with HST's Wide Field and Planetary Camera (WF/PC), in high resolution mode, on July 6, 1991. The two peaks are separated by 5 light-years. The Hubble image is 40 light-years across.
[Center] - Ground View of Galaxy Core
The nucleus is at the center of the bulge of M31, a smooth system of old stars. The bulge is apparent as the bright center of M31 in standard pictuits of the galaxy. Individual points of light are globular star clusters each containing several hundred thousand stars. This ground-based telescopic image does not resolve the double nature of the nucleus. The background of the present picture is dark only because the contrast has been adjusted to show the lull detail in the nucleus which is much brighter then the surrounding bulge.
[Left] - Ground View of Galaxy
One of the closest (neighbors to our own Milky Way galaxy, M31 (the 31st object in a catalog of non-stellar objects compiled by French astronomer Charles Messier in 1774) dominates the small group of galaxies of which our own Milky Way is a member. M31 can be seen with the naked eye as a spindle-shaped "cloud" the width of the full moon.
Object Names: M31, NGC 224
News Release Number: STScI-1993-18 - Hubble Space Telescope
Services: Web Services
Setting up an account
is easy. Full instructions will be provided on how to set up your new
mail account, with step-by-step illustrations.
Any website designed and used for a sub-domain must be an astronomy or earth-science based website. Swindonstargazers.com will also link to the website, building perhaps what we hope may be a 'family of websites'. Well, you never know!
Support and advice will be given to anyone wishing to design their own website.
Contact the website administrator at Robin Wilkey
A copy of the club constitution can be found HERE
- Newsletter Now Available
The newsletter can
be downloaded to your computer for personal use by clicking on the illustration
of the newsletter. It is an Acrobat file and you will need Adobe Acrobat
Reader already installed on your computer to open it. If you do not
have Adobe Acrobat Reader it can be downloaded free of charge by clicking
Fees - Revised 25 March, 2022